Multipolar Magnetic-Field Inference for PSR J0740+6620 with Neural-Network-Accelerated NICER Pulse-Profile Modeling

arXiv:2606.30886 · astro-ph.HE, gr-qc, physics.data-an · Submitted 2026-06-29 · Read on arXiv

Farhana Taiyebah, Constantinos Kalapotharakos, Greg Olmschenk, Wendy F. Wallace, Soumi De, Abu Bucker Siddik, Diane Oyen, Thibault Lechien, Zorawar Wadiasingh

astro-ph.HE, gr-qc, physics.data-an

Submitted: 2026-06-29

Comments: 18 pages, 10 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Calibration — 16× in this paper · explained in 7 episodes
• Core — 9× in this paper · explained in 2 episodes
• Accuracy — 4× in this paper · explained in 1 episode
• Fidelity — 3× in this paper · explained in 2 episodes
• Markov Chain Monte Carlo — 3× in this paper
• Alignment — 2× in this paper · explained in 1 episode
• Robustness — 2× in this paper · explained in 5 episodes
• Activation Function — 1× in this paper · explained in 1 episode
• AdamW Optimizer — 1× in this paper · explained in 1 episode
• Degeneracy — 1× in this paper · explained in 3 episodes
• Trace — 1× in this paper · explained in 2 episodes

Sources

• The swept-back multipolar magnetic field of neutron stars: Application to NICER MSP J0030+0451

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